Dump-car.



A. GAMPBEL DUMP GAR.

APPLICATION FILED JULY 13,1908.

Patented M3112, 1909.

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Patented Mar. 2- 19%.

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A. GAMPBELL.

DUMP GAB.

APPLwATmH FILED JULY 13, 190B.

Patented M20122, 1909.

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A. GAMPBELL.

DUMP UAR.

APPLICATION FILED JULY 13,1908.

Patented Mar. 2, 1909.

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UNITED STATES PAT ARGYLE CAMPBELL, OF CHICAGO, ILLINOIS, ASSIGNOR TOENTERPRISE RAILWAY EQUIPMENT COMPANY OF CHICAGO, ILLINOIS, ACORPORATIONOF ILLINOIS.

. Dome-can.

Specification of Letters Patent.

Application filed July 13, 1908. Serial No. 4.43,.250.

To all whom it may concern:

Be it known that I, ARGYLE CAMPBELL, a citizen of the United States,residing in Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Dump-Cars, of which thefollowing is a specification.

My invent-ion relates to improvements in dump cars, and moreparticularly to the. operating mechanism for dump car doors.-

The object of my invention is to provide a dump car door operatingmechanism of a simple, strong, efficient and durable construction, bywhich a plurality of doors may be simultaneously operated from the sameoperating shaft, and in which the doors will be held or locked securelyin their closedposition, and in which the load on the doors will have notendency to unlock or release 1e door operating mechanism, and in whichthe strain of the looking or load supporting mechanism for the doorswill be exerted upon opposite sides of the operating shaft so as toneutralize each other and thus exert "no bending or side strain 'uponthe operating shaft.

My invention consists in the combination with a plurality of-dump cardoors, of a common operating shaft for the several doors, a plurality ofwinding drums on said shaft, the same being referabl-y made-in onepiece, each having a stand preferably shouldered locking face, the drumsbeing polygonal and ireferably four sided, a pan of locking i)lOCl S,each preferably having a shouldered face adapted to engage andinterlock-With the shouldered face of its d-rc 1 a plurality ofconnecting links between each lockingblock and its drum, the same beingpreferably three in number for-each drum and fitting and correspondingto the three-sides of the drum while the locking blockfits-andcorresponds withthe remaining sidea'thereof, and supporting connectionsbetween the several doors and locking blocks, the lockingfaces on thetwov drums being arranged opposite to each other, so that the, commonoperating shaft-is embraced betwecn'iihe opposing forces of thedoorsacting against t e locking blocks upon the opposite sides of theoperating shaft.

My invention also-consists 1n the novel construction of parts anddevices, and in. the novel combinations of parts and devices hereinshown and described and more part cular specified 1n the claims.

In the accompanying drawing forming a' part of this specification,Figure 1 is a plan View of a dump car embodying my invention. Fig. 2 isa side elevation. Fig.- 3 is an enlarged vertical cross section on line33 of Fig. 2. Fig. 4 is a detail plan view showing the common operatingshaft and connecting links unwound from the drum. Fig. 5 is a sideelevation of thepart-s shown in Fig. 4. Figs. 6 and 7 are detailsect-ions on lines 66 and 7-7 of Fig. 1 .butshowing the locking blocksand connecting links intheir locked or closed position. Fig. 8 is adetail plan view of the same. Fig. 9'is a detail perspective view of thewinding drums,-the same being made integral. Fig:

10 is a vertical crosssection illustrating a modification. In thedrawing,1 represents a dump car of any suitable kind-or construction, 2the intermediate sills, 3 the side sills, l -the upper floor plates ofthe car. The dura doors 5', 5'and 6, 6 are preferably arrange inpairs,each pair having hinges 7 so that theswing ing edges of bothdoorsof-each pair 5; 5 or 6 6 come together. The doors may be arrangedto swing open transversely of the car as shown in Figs. 1 and 2, orlongitudinally asshoivn in Fig. 10. .Both pairs of doors 5,

5 and 6, 6 are simultaneously operated by a common operating shaftjournaled in suitable supporting brackets 9 on the car frame andpreferably arranged between the two pairs=ofdoors 5, 5 and 6, 6.

The common operating shaft 8 is provided with two winding drums 10, 11,both preferably'in one integral piece for-convenience in manufacturing.Each of the winding (i unis 10, His preferably of a polygonal shape andfour'slded, the two drums being preferably duphcates of each other. Eachof the finding drums has a locking face 12,

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around the drum Connected to the pivot lugs 14, 14 "are connecting links16,16 and locking blocks 17, 17 the locking blocks hav ing each alocking face 18, preferably furnished with a shoulder 19 and adapted toengage the .locking faces of the winding drums when the connecting linksare wound around the drum. Each set of connecting links 16 arepreferably three in number, and

with the locking block thus correspond to the number of faces of thewinding drum. The

pivot lugs 14, 14 on the two winding drums are'located-diametricallyopposite each other so that the two locking blocks 17 17 thus come onthe horizontalcenter line of the com' nections 20 are represented aschains or flexible connections and are furnished with branches 21, 21extending to each door of each pair. The chains or connections 20 extendover gliide pulleys 22. The common operating s aft 8 is furnished withan operating lever'23 and ratchet24.

The dump car door operating\ mechanism is preferably duplicated 'at eacend of the doors 5, 5 and 6, 6 as will be readily understood from thedrawings.

In the modification illustrated in Fig. 10, the invention is shown asapplied to a side dump coke car, the doors 5 and 6 being longltudinallyinstead of transversely hinged. In this modification, the connections 20between the locking blocks and the swinging edges of the doors are reresented as being rods instead of chains. T e operating mechanismillustrated in this figure is the same as above described. The lockingface 18 of each of the locking blocks 17 17 extends for its majorportion past the center line of the shaft when the doors are closed andthe looking mechanism in locked position, so that .the

load of the doors has no tendency to turn. the shaft in the doorreleasing direction.

I claim:' I

1. In a dump car, the combination witha plurality of loadsupporting-doors, of a com-. mon operating shaft, apair ofwinding drumson said shaft each hav ng a locking face, the locking faces of the twodrums being on oposite sides of the shaft, a pair of lockingv lockshaving locking faces engaging the locking faces of the drums on op ositesides of the shaft, flexible connecting hu (8 between each drum and eachlocking block, and connections between the locking blocks and the doors,substantially as specified.

2. In a dump car, the combination witha plurality of load supportingdoors, of a common operating shaft, a pair of winding drums on saidshaft each having a locking face, the locking faces of the two drumsbeing on oposite sides of the shaft, a pair of locking locks havinglocking faces engaging the locking faces of the drums on opposite sidesof the shaft, flexible connecting links between each drum and eachlocking block and connections between the locking blocks and the doors,said locking faces on the, drums and locking blocks being furnished withinterengagling shoulders, substantially as specified.

'3. n a dump car, the combination with two load supporting doors, of acommon operating shaft, a pair of winding drums on said shaft, a pair oflocking blocks on opposite sides of the shaft and connected with,

the doors so that the shaft is clamped between said locking blocks bythe doors, substantially as specified. p

4. In a dump car, the combination with two doors, of a common operatingshaft, and locking devices on opposite sides of the shaft connected tothe doors, each of said locking devices having a locking face extendingfor its major portion past the center line of the shaft so that when inclosed and locked position, the load of the door has no tendency to turnthe shaft in the door releasing direction, substantially as specified.

ARGYLE CAMPBELL. Witnesses:

H. W. MUNDAY, PEARL ABRAMS.

